Abstract: Calcium aluminate with the mayenite structure (Ca12Al14O33) is of significant interest for use as a catalyst support due to the ability of stabilizing such active particles as O–, O2– or free electrons in the anionic sublattice. We explored the effect of toluene addition on the phase composition and pore structure of aerogels and xerogels with the mayenite stoichiometry with the goal of preparing nanocrystalline mayenite samples with high purity and high surface area. The addition of a two-fold toluene excess relative to alcohol with a five-fold water excess was found to yield samples with predominating mayenite phase and specific surface area ca. 110 m2/g after drying either over a hotplate in the air or in an autoclave followed by calcination in air at 500 °C. Meanwhile, calcium carbonate was the main crystalline phase if the process was carried out in the absence of toluene. The aerogel sample demonstrated excellent thermal stability. After calcination at 900 °C for 6 h it had the surface area of 48 m2/g and 93% of the mayenite phase.

Cite: Ilyina E.V. , Kapishnikov A.V. , Serkova A.N. , Shuvarakova E.I. , Bedilo A.F.
Effect of Toluene on the Formation of Nanocrystalline Mayenite Phase by the Sol-Gel Method
Journal of Sol-Gel Science and Technology. 2026. V.117. N1. P.1-12. DOI: 10.1007/s10971-025-07080-1 WOS Scopus AN OpenAlex

Dates:

Submitted:	Aug 27, 2025
Accepted:	Oct 18, 2025
Published online:	Jan 1, 2026

Identifiers:

Web of science:	WOS:001653296100009
Scopus:	2-s2.0-105026339547
Chemical Abstracts:	2026:62289
OpenAlex:	W7118086063

Citing: Пока нет цитирований

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